[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Encoding detection again ...
Sorry to follow up my own posting, but one thing needs a bit of clarification, and one typo needs correction. I wrote, > David Brownell wrote, > > Put it this way: if you assume UTF-16, you're > > safe either way because UTF-16 is a superset. > > Err ... is that true? > > Maybe I'm being a bit obsessive about my > interpretation of the various standards docs, but > as far as I can see UCS-2 isn't a subset of > UTF-16. The question of UCS-2 being, or not being a subset of UTF-16 is a bit of a red herring. It is undoubtedly true that the set of octet pairs which are legal UCS-2 characters is a subset of the set of octet pairs which are legal UTF-16 characters. Appendix F suggests that octet sequences which could equally well be interpreted as UTF-16 or UCS-2 may be assumed to be UTF-16, and *doesn't* include a clause stating that this assumption should be revised in the light of an explicit XML encoding declaration. I think that clause should be added, in much the same way as it is for UTF-8 vs. 8859-X. Now the typo ... > This very complicated and isn't a zillion miles away > from the current handling of UTF-8 vs. ISO 8859-x > vs. US-ASCII. Please insert the word 'isn't' in the obvious place ;-) Cheers, Miles -- Miles Sabin Cromwell Media Internet Systems Architect 5/6 Glenthorne Mews +44 (0)181 410 2230 London, W6 0LJ msabin@c... England xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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